Computing-scale.



. J. HOPKINSON. COMPUTING SCALE.

APPLICATION FILED AUG. 2, 1910.

Patented Jan. 21, 1913.

4 SHEET S-SHEBT l.

. Invenzo, sepa opczlntsom J. HOPKINSON.

COMPUTING SCALE.

APPLICATION FILED AUG. 2, 1910.

1,050,832. 1 Patented 18111.21, 1913.

4 SHEETS-SHEET 2.

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J. HOPKINSON.

COMPUTING SCALE.

APPLICATION FILED AUG. 2,1910.

Patented M1121, 1913.

4 SHEETSf-SHEBT 3.

mms s y v jnz/eni'of" 5% y 7569070 /z/op/azlmo n@ @WQ/EMA JMWMWW J.HOPKINSON.

COMPUTING SCALE.' APPLICATION FILED AUGK. 2, 1910.

4 SHEETS-SHEET 4.

Patented Jan. 21, y1913.

,UNITED srArEs PATENT onirica.g

F DAYTON, OHIO, A. CORPORATION 0F OHIO..

coivirUTINdsc'ALE.

T 0 all whom 1' t may concern.'

Be ithnown that I, JOSEPH HorKiNsoN, a citizen of the United.l States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented certain new and useful Improvements in Computing- Scales, ofwhich the following is a specification. A y

The object of my invention is to provide ,a .computing scale embodyingmeans for fafthe structure. Fig. 3 is a sectional side view of the upperpartof'the structure shown in Fig. 2, the upper part of the sectionbeing taken at the center of the structure as viewed in Fig. el. and thelower part being sectioned near the end. Fig. L is a sectional frontview of the upper part of the scale, the section being taken at thecenter of the mechanism as viewed in Fig. 3. Fig. 5 is a front View ofthe upper part of the scale 4embodying my invention and showing acircular instead of a semi-circular dial lat the upper portion thereof.Fig. .6 is a fragmentary View showing the gears for operating the indexhand upon the' upper dial.

The scale which I have selected for the purpose of illustrating myinvention is of a type now in extensive use and comprises a scale beamand platform operatively connected to a cylindrical pricevchart, which irevolves within a casingprovided with a sight opening or slot throughwhich the chart maybe viewed. The chart is provided with circumferentialrows of graduations and numerals, there being one row of graduations andnumerals for each price per unit of weight which the scale is designedto register, and the cylindrical chartL may also,

.is usual, be provided with a circumferential series of graduations andnumerals for reading the weight in pounds and ounces or Specicatien ofLetters Patent.

Application filed August 2, 1910. Serial No. 575,073.

Patented aan. 21,1913.

fully appear from the following description, the ends of the cylindricalcasing are left open, the openings beingfilled with glass, if desired,for the purpose of admitting light to the interior of the price chart.Accordingto my invention the price chart is constructed of translucentmaterial. In thepositions ordinarily used in shops and elsewhere thesources of light are found to be located behind the scales, that is, onthe side opposite the platform. When the lights are so located the partvof lthe cylindrical chart which is exposed through the sight opening inthe casing is not well illuminated. 'ly providing the iiiclosing casingwith open or transparent ends, however and constructing the cylindi'icalchart of translucent material, light proceeding from the side of thescales opposite the platform and sight opening isI admitted throu h theopen or transparent ends of the casing to the interior of thetranslucent cylindrical chart, thereby causing the opaque numerals andgraduations thereon to appear in sharp relief when viewed throu li thesight opening in the casing. It wil be apparent of course that thisfeat-ure of my in ventionmay be applied to price and weight charts ofother than cylindrical form, though in the drawings of this applicationI have chosen to illustrate it in connection with a cylindrical chart.In oi'der to further facilitate the reading ofthe weights registered bythe scales, I have provided a weight Vdial above the price chart, suchweight dial preferably being provided with graduations vJOSEPHHOPKINSON, OF DAYTON, OHIO, ASSIGNOR TO COMPUTING- SCALE COMPANY,

facingy in opposite directions, in order that 'the double weight dial,in those cases where the same is made double, are index hands actuatedby.l the scale'beani or otherp'art of the mechanism having a movementproportional to the weight of the substance being weighed. It will beapparent that my supplemental weight dial may be constructed te readeither upon one or both sides, and that the cylindrical or other pricechart may or may not be provided with weight graduations in addition tothose appearing upon the supplemental dial. The supplemental dialoccupies a conspicuous position and thereby renders the reading of theweight vespecially convenient, and owing to the fact other gravitationalunits. As will morel that tho weight is the basic quantityV from whichthe prices are found either by a mental operation, or -by an observationof the price chart, this feature has been found to be one of greatutility.

The main scale beam 1 is provided with knife edges 2` resting upon thestandard 3 rising from the base 4and is provided with a counterweight 5upon the forward side of the fulcrum formed by the knife edges. Aplatform 6, which ,may take any of the vusual forms used for receivinggoods ofv scale beam 1 is engaged by a hook upon the lower end of asteelyard rod 11 which at its upper end is provided with a hook, whichengages the hook 12 secured to the cross arm 13. Secured to the ends ofthe cross arm 13 and extending upwardly 'therefrom are draft rods 14,which at their upper ends are secured to the draft springs 15.

Risinofrom the base 4 of the scales are supporting pillars 16 connectedat their upper ends by the horizontal support 17. Circular end frames 18carry between them the cylindrical casing 19. Upon their outer sides theend frame rings 18 carry inturned flanges 20, which support circularplates of glass 21. At their inner edges the frame rings 18 supportspiders consisting of radial arms 22, which at their centers supportbearing. brackets 23 in which the shaft 24 is journaled.

FiXedly mounted upon the shaft 24 are spiders 25, the outer ends of thearms of which take the form of circular flanges 26. Supported around theflanges 26 of the spiders 25 is the translucent cylindrical chart 27,bearing circular rows of graduations for the different prices to beregistered and also for the weights if desired.

Pinions 28 are secured to the shaft 24 near the ends thereof and outsideof the cylindrical price chart 27. The shaft 24 and its pinions 28project through central openings 29 in the stationary spiders 22 and thepinions are engaged by vertical racks 30, which at their lower ends aresecured to rack bars 31. The lower ends of the rack bars 31 are'gagemcnt wi 'th-the pinions 28, and the outerA .ends of the mener 33 areforkedzat 35 in VOrder that the movements of the evener 33 may beguidedbythedra-ft rods 14.

The rod 33 is actuated by the e gagenient of the central part thereofwith the plate 36, which carries the hook 12 to which the steelyard rod11 is attached as above stated. Means which form no part ofmy presentinvention are provided for adjusting the relation between the evencr 33and the plate 36, such means being utilized for the purposeof securingthe proper relationbetween the scale beam and cylindrical price chart.

The draft springs 15 at their upper ends are connected to bolts 37,which depend from the upper part of the rings 18.

Rising above the cylindrical casing` 19, as shown in Fig. 1, is asemi-circular diall 38 graduated in units of weight. There may either bea single one of these dials facing either toward the platform .or frontof the scales or toward the back of the scales to be n observed by thecustomer, or, as shown in Figs. 2 and 3, there may be two such dials,

one facing in each direction and each pro? vided with an index hand.Referring to the double arrangement illustrated, the index hands 40 arepivotally mounted at the center of the semi-circular dials, and securedto the stub shafts 41 upon which the hands are mounted, are bevel gears42 lying within the space between the two dials. Engaging the bevelgears 42 is a bevel gear 43 mounted upon a shaft 44 supported inbearings 45 upon the top of the casing 19. The shaft 44 extends to theside of the casing and at its outer end carries a pinion 46, which isengaged by one of the racks 30.

Extending upwardly from the cylindrical casing 19 is a casing 47surrounding the dials 38 and their indicator hands 40. Opposite thedials 38 the casing 47 is provided i with sioht openings preferablyprotected. by

glass pilates 49.

The cylindrical casing 19, as -usual in scales of this character, ,isprovided upon its forward side with a longitudinal slot 50A throughwhich the graduations upon the cylindrical price chart 27 may be; rlead.Upon the casing 19 along one of the edges' of the slot 50 are a'seriesof numerals 51 designating the different prices corresponding to thegraduations upon the price chart, and opposite the series of graduationsupon the cylindrical chart representing weight units the word Weight maybe marked upon the casing 19, as shown in F ig. l.

The counterweight 5 and the weight of the various moving parts enteringinto the structure of the scale are such that when the plat-form isunloaded the zero designation upon the several circles of graduationsupQn the price chart will rest opposite the slot 50, and the index handor hands 40 will rest opg-posite the zero point upon the supplement-al`"fwei-ght' dial 38. When a Substance to be weighed is placed upon thelatform the 1ev ver 1 will be depressed unti the tension of lso theldraft sprin s 15 counteracts the weight thereof. In or er to dampen thevibrations of the draft springs, a dash-pot 52 is placed below the.platform and its plunger connected to a `stem 53 secured to the'scalebeam or platform.. The downward movement of vthe scale beam istransmitted through the connection 36 to theevenerl and thence to theracks 30, thereby through their engagement with the. pinions 28imparting rotation .to the cylindrical chart proportional to the Weightof the substance upon the platform. One of the racks 30 being inengagement with the pinion 46 upon the shaft 44 the index hand or hands40, through the engagement of their bevel gears 4l with the bevel gear43, -will also be rotated an amount proportional to the weight of thesubstance upon the platform. B this means a conspicuous indication o'the weight registered is displayed upon the dials 38 in a position tobe easily observed by the customer without ei'ort or by the clerkoperating the scales. 'By reason of the fact that the ends of the casing19 are open to the transmission of light the graduations upon thecylindrical price chart 27 can be easily 'observed even though the lightis situated upon the side of the scale opposite the plat form. When thisis the case the readings upon the cylindrical price chart can easily be.made by means of the light transmitted through the translucent chartfrom its inte- A rior, while if the light is located in front of thescales, that is, on the platform side thereof, the readings upon thecylindrical chart can-be made as usual by means of reflected light. i

While I have shown and described my invention vin connection with aparticular form of scales now in extensive use, it will be apparent thatthe principle of -my invention may be'applied to scales of diderentconstruction and operation.

I claim 1. In a Weighing scale, a scale beam, a platform mountedthereon, a variable counterbalancing element, a rotary cylindrical pricechart, a pinion secured to said cylin drical price chart, a graduatedWeight dial, a rotatably mounted index hand cooperating therewith, ainion, means for operatively connecting said inion with said indexhand,a rack connecte to said scale beam and engaging said pinions, and anoperating connection between said scale beam and counterbalancingelement.

2. In a weighing scale, a scale beam, a platform supported thereon, avariable counterbalancing element, a rotary cylindrical price chartabove and to the rearof said platform, a pinion secured to said cylin-,drica/l price y h rt, va graduated Weight dial above said price chart,a movable index hand cooperating thereilwth, a pinion, means operatively connecting said pinion with said index hand, a rack extendingupwardly from said scale beam into engagement with said pinions, and anoperating connection between said scale beam and counterbalancingelement.

3. In a weighing scale, a scale beam, a platform supported thereon,avariable counterbalancing element, a slotted casing above and to therear o f said platform, a shaft and cylindrical price chart rotatablymounted in said casing, a pinion secured tsaid shaft, a 'graduatedWeight dial above said casing, a rotatably mounted index handcooperating with said dial, a bevel gear in fixed relation to said indexhand, a shaft, a pinion secured to one end of Said shaftv and a bevel'gear secured to the other end thereof and in engagement with said iirstmentioned bevel gear, a rack connected to said scale beam and engagingboth of said pinions, and an operating connection between said scalebeam and counterbalancing element.

. 4. In aweighin scale, 'a scale'beam, a

' platform supporteV thereon,avariable counterbalancing element, aSlotted cylindrical casing extending vtransverselyV of said Scale beamand located above and to the rearof said platform, a shaft andcylindrical price chart thereon rotatably mounted iny said casing,a'pinion secured to said shaft a graduated weight dial located centralabove said casing, a rotatably mounted in eX hand cooperating with saiddial, a` bevel gear in fixed relation to said index hand a shaft eX-tending parallel to said cylindrical price chart, a inion secured tothe' outer end of said shatt-a bevel gear'secured'to the inner endthereof and in engagementA with said irstsmentioned beveled gear, arackconnected to said scale beam and `extending up- Wardly adjacent the endof said casing and engaging both of said pinions, and anoperating'c'onnection between. said scale beam and counterbalancingelement.

platform, a shaft upon which said price' chart is mounted, a pinion uponthe end of said shaft, tWo oppositely-facingpwelght dials above saidprice chart, a casing sur los y "11o 5. In a weighing scale, a scalebeam, a-

l rounding said priee chart and Weight dials,

teneis Puten; No. 1,050,832.

C orreet said. casing being provided With a slot opposite said pricechart and With sight openings opposite said Weight dials, rotatablymountedindex hands in eoperative relation With said Weight dials, abevel gear mounted in fixed relation with each of said index hands,

- a shaft, a bevelgear upon said shaft engaging said index hand bevelgears, a pinion Office.

ion .In

` In testimony whereof, I havelsubscribed my name.

' JOSEPH HoPKtNsoN.

Witnesses:

I. G. KENNEDY, WALTER A. SCOTT.

It is 'hereby certified vthat in Letters Patent No.'1,050,832, grantedJanuary 21, 1913, upon the application of Joseph Hopkinson, of Dayton,Ohio, for an improvement in Computing-icales,77 an error appears in theprinted specification requiringcor'reetion as -follows: Page 3, line125, after the wordelen1ent insert a eomma. and the article a; and thatthe said Letters Patent shouldhe read with this oorreetion therein thatthe same may conform to the record of thecase in the Patent *Signed andsealed this 18th day ot' March, A. D., 1913.

C. c. BILLINGS', y

czfz'ng Commissioner of Patents.

